Preheat oven to 400 degrees. Combine the oil, basil, oregano, garlic powder, and salt in a 13x9-inch roasting pan. Place in the oven for 5 minutes.
Add the cubed potatoes, tossing to coat with the herb/oil mixture. Bake for 40 minutes, turning occasionally, until the potatoes are tender inside and crisp outside. Drizzle with the lemon juice, grate a bit of lemon peel over the potatoes, and serve immediately.